use of PREEMPT_ACTIVE ?

[Julien . Soula]

hello,

the PREEMPT_ACTIVE flag set by preempt_schedule() or during return of
interrupt / exception / syscall. And it's tested in schedule() to
avoid some operations like deactivate_task().

Our purpose is to force deactivation of the task. So we planned to set
task state to TASK_INTERRUPTIBLE value and then to call
schedule(). However the PREEMPT_ACTIVE flag can prevent it.

So what is the significance of the PREEMPT_ACTIVE flag and the test in
schedule() ?

Sincerly, thanks in advance,
-- 
Julien

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